Prior to the collapse of communism, communist countries worked on the premise that economic well-being could be best attained by: a) a market economy. b) a strong reliance on prices and individuals' self-interests. c) a system of large privately-owned firms.

D) the actions of government central planners

Explanation:

Communism was an economic doctrine where the government imposed an extremely rigid command economic system, where the government was in total control of the economy. This is a type of command economic system where the government decides on most economic affairs, and it doesn't favor private businesses. Prices are usually  fixed, including the prices of goods and labor. Domestic private companies are outlawed, and foreign private companies are not willing to risk investing in communist country. Communism favored income equality and full employment, at the expense of decreasing economic liberties.

contributions made after 1986. after-tax contributions to employer plans made after 1986 are recovered pro rata with taxable amounts. the remaining $80,000 is from pre-tax contributions, employer matching dollars, and earnings on those amounts.

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